EVAL-ADE7878EBZ Analog Devices Inc, EVAL-ADE7878EBZ Datasheet - Page 11

• Manufacturer Part Number: EVAL-ADE7878EBZ
• Description: Energy Meter Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADE7878EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Energy Meter
• Kit Application Type: Data Converter
• Silicon Core Number: ADE7878
• Features: External Transducers, LED Indicators, Logic Outputs
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4472972; Q4684026; Q5015773

Preliminary Technical Data
and ADE7878 status and the one above shows bits, registers and
commands necessary to the power management.
Current RMS
When “Current RMS” is selected, a new panel is opened (Figure
17). All data paths of all phases are available.
“Read Setup” button reads all registers shown in the panel.
“Write Setup” button writes xIRMSOS[23:0] (x=A,B,C,N)
registers.
“Start/Stop Digital Signal Processor” buttons manage
RUN[15:0] register.
“Read xIRMS” registers button uses ZXIA, ZXIB and ZXIC
interrupts at
registers 10 consecutive times and then compute and visualize
their average. If no interrupt occurs for a time indicated by the
timeout (in 3 sec increments), then the following message is
visualized: “No ZXIA, ZXIB or ZXIC interrupt was generated.
Verify at least one sinusoidal signal is provided between IAP-
IAN, IBP-IBN or ICP-ICN pins. ” A delay can be introduced (in
10msec increments) between the time
the moment the xIRMS registers are read. The operation is
repeated as long as the button remains pressed.
IRQ pin to read xIRMS[23:0] (x=A,B,C,N)
1
Figure 16. Apparent Power panel
IRQ pin goes low and
1
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Mean Absolute Value Current
When “Mean Absolute Value Current” is selected, a new panel
is opened (Figure 18). When “Read xIMAV Registers” button is
pressed, xIMAV[19:0](x=A, B, C) registers are read 10
consecutive times and then their average is computed and
visualized. After this operation, the button is returned back
high automatically. In addition, ADE7878 status is visualized.
Voltage RMS
This panel is very similar with the Current RMS panel. “Read
Setup” button executes a read of xVRMSOS[23:0] and
xVRMS[23:0] (x=A, B, C) registers.
“Write Setup” writes xVRMSOS[23:0] registers into ADE7878.
“Start/Stop Digital Signal Processor” buttons manage
RUN[15:0] register.
“Read xVRMS” registers button uses ZXVA, ZXVB and ZXVC
interrupts at
registers 10 consecutive times and then compute and visualize
their average. If no interrupt occurs for a time indicated by the
timeout (in 3 sec increments), then the following message is
visualized: “No ZXVA, ZXVB or ZXVC interrupt was generated.
Verify at least one sinusoidal signal is provided between VAP-
VN, VBP-VN or VCP-VN pins. ” A delay can be introduced (in
10msec increments) between the time
the moment the xVRMS[23:0] registers are read. The operation
is repeated as long as the button remains pressed.
IRQ pin to read xVRMS[23:0] (x=A,B,C)
1
Figure 17. Current RMS panel
EVAL-ADE7878EB
IRQ pin goes low and
1